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SergioV

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Posts posted by SergioV


  1. I made a normal modes analysis and now with Hyperview i'm trying to get the data I need. I already got the eigenvectors (X,Y,Z) for each of the modes using the Matrix Browser. Nevertheless when I get those result I don't get the natural frequency (eigenfrequency) related to that specific eigenvectors. As you see in the picture below, the frequency doesn't appear (only that those data is related to "sel1"). How could I make the eigenfrequency to appear there so ones I postprocess the results I can get access to that data?

     

    Thanks in advance

     

    Sergio

     

    image.thumb.png.95f2fb42ee632aaaf90281f1b443cb9d.png


  2. Good morning!

     

    I'm trying to model the 4 cables shown in the attached file. At first I thought of using Beams to make it easier but the fact is that those cables cannot transmit moment (rotation) in the joints (2 joints in each cable). How should I do it? Do I change the element type? Is there any way of erasing restriction of the rotational DOF at the joints?

     

    Hoping a quick response and thanks in advance!

     

     

    Conjunto tubos.STEP


  3. Hi!

     

    I'm trying to mesh a solid with TetraMesh and it states the following error: "2 edges failed nodal setup. Meshing failed".

     

    But I can't see anything wrong or red colored or anything that tells me where the mistake is. Even with visualisation options. The solid is created properly with bounding surfaces so I guess there are not free edges.

     

    Could you help me?


  4. Good morning,

     

    I'm running a transient analysis of 2 gears (one of them with a preload and the other one with an imposed rotation). When I run it with Optistruct I get 2 problems:

    •  *** ERROR # 4965 ***
       Maximum number of time increment cutbacks reached,
       analysis aborted.
    • The biggest problem comes here, if I analysis the results, the contact status is 0 everytime. The gears rotate but they don't seem to have a good contact. Moreover, I get high normal contact forces at points where there should be any contact (see image attached).

     

    I also attach the .fem to make it quicker and the .out from the previous simulation

     

    Thanks!!

    A.PNG

    1107rem.out 1207manana.fem


  5. Good morning,

     

    I'm running a transient analysis of 2 gears (one of them with a preload and the other one with an imposed rotation). When I run it with Optistruct I get 2 problems:

    •  *** ERROR # 4965 ***
       Maximum number of time increment cutbacks reached,
       analysis aborted.
    • The biggest problem comes here, if I analysis the results, the contact status is 0 everytime. The gears rotate but they don't seem to have a good contact. Moreover, I get high normal contact forces at points where there should be any contact (see image attached).

     

    I also attach the .fem to make it quicker and the .out from the previous simulation

     

    Thanks!!

     

    A.PNG

    1107rem.out 1207manana.fem


  6. Hi! I wanna model the rotation of a gear (wheel) with a preload in the pinion. I asume the preload is modeled with a moment but, how do I model the rotation? And which analysis type should I choose? (I don't want  a quasi-static one). Some analysis don't let me include a LOAD. Thanks in advance!


  7. Hi! I wanna model the rotation of a gear (wheel) with a preload in the pinion. I asume the preload is modeled with a moment but, how do I model the rotation? And which analysis type should I choose? (I don't want  a quasi-static one). Some analysis don't let me include a LOAD. Thanks in advance!


  8. Hi! I wanna model the rotation of a gear (wheel) with a preload in the pinion. I asume the preload is modeled with a moment but, how do I model the rotation? And which analysis type should I choose? (I don't want  a quasi-static one). Some analysis don't let me include a LOAD. Thanks in advance!


  9. I guess I have to créate a curve first but I get this error when I click "new" on "curve editor"

     


        while executing
    "hm_getstring "Name =" "Create a new curve""
        (procedure "::HMCurveEditor::onNewCurve" line 6)
        invoked from within
    "::HMCurveEditor::onNewCurve"
        ("eval" body line 1)
        invoked from within
    "# Compiled -- no source code available
    error "called a copy of a compiled script""
        (procedure "::hwt::ReleaseCanvasButton" line 1)
        invoked from within
    "::hwt::ReleaseCanvasButton 0 .ceWindow.actionFrame.newButton"
        (command bound to event)
     


    • Is it necessary to change all the loads as u did? The "rueda" was supposed to be rotating some degrees during each step (quasi-estatic analysis), while the pinon had a moment.
    • Why are all the noded from rueda and pinon blocked in all DOF but the rotation in Z?
    • Can't the moment be applied as it was before (you created a curve to do it)

    Thanks a lot and sorry for so many problems,

     

     


  10. Thank u so much. How do u think I could delete the rigid body but remain what I need?:

    • The center of that rigid body to be the center of rotation
    • The inner nodes of "pinon" and "rueda" to be fixed on the 6dof with respect to that center of rotation

     

    Thanks again!


  11. I did that. Now I don't get errors in model Checker (I do get warning such as "free nodes in the model", "incompatible kinematic conditions on nodes", "Rbody id is different from master id" and "Rigid body connected to only one part").

    But I still get the same error 

     

    ERROR ID :           54
    ** ERROR IN INPUT FORMAT
    DESCRIPTION :  
       IN BLOCK : 581       588       589       590       591       592       593       594       595       596

     

    I send the file attached

     

    Thanks

    2D - achafl.hm


  12. I'm trying to run an analysis in Radioss and I get an "Error ID 54".  Together with some more errors and warning. I attach the .out file (complete)

     

    ERROR ID :           54
    ** ERROR IN INPUT FORMAT
    DESCRIPTION :  
       IN BLOCK : 581       588       589       590       591       592       593       594       595       596

     

    Thanks for helping

    new_0000.out

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